Finding the Third Proportional to 64,181.25 and 143,119.69

Step by Step Solution

1. Step 1: Write the proportion equation
   64,181.25 : 143,119.69 = 143,119.69 : x
2. Step 2: Convert to fraction form
   64,181.25/143,119.69 = 143,119.69/x
3. Step 3: Cross multiply
   64,181.25x = 143,119.69 × 143,119.69
4. Step 4: Simplify right side
   64,181.25x = 20,483,244,950.10
5. Step 5: Solve for x
   x = 20,483,244,950.10/64,181.25
6. Step 6: Final answer
   x = 319,146.87